A friend has taken a
particular shape of paper, and folded it exactly in half (both sides matching)
The final shape of the
(four-thickness) paper is shown below:
Can you work out the original shape of the paper?
There may well be more than
What if the final shapes
were as shown here, instead?
Finally… can you find a nice, easy, polygonal final shape for which there is only one possible starting shape?!
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